Huawei Watch Ultimate 2

The Huawei Watch Ultimate 2 is the flagship of Huawei's wearable range and the company's most adventure-focused watch. It combines a zirconium-based liquid-metal case, sapphire glass and a nano-tech ceramic bezel with a 150-metre diving rating, sonar-based underwater messaging, eSIM calling, a golf suite and an ECG sensor. This page is a specification-and-information review based on the published specifications and manufacturer information. It places the watch in the lineup, describes the case and display, the diving and outdoor tools, the health sensors, the battery claims and the compromises you accept with a large, heavy, specialised watch.

Place in the lineup

The Ultimate 2 sits above Huawei's mainstream sports watches such as the Huawei Watch GT 7 Pro and the earlier Watch GT 6. Where those models prioritise multi-week battery life and a slim case, the Ultimate 2 trades endurance for ruggedness, diving capability and communication. Its closest competitors are other expedition and dive watches, among them the Garmin Fenix 9; the direct comparison shows how the published specifications line up. The release date used here, 19 September 2025, is the approximate launch date; Huawei's global product page does not state one. The page also lists no price, and no United States price is known, so none is given here.

Design, materials and display

The case is octagonal and skeletonised. The front case is made of zirconium-based liquid metal with a hard coating, the rear case is nanocrystal ceramic and the bezel is a nano-tech ceramic ring. The crystal is artificial sapphire. Dimensions are 48.5 x 48.5 x 12.9 mm for the black version and 47.8 x 47.8 x 12.9 mm for the blue and green versions, and the weight is about 80.5 grams without the strap. The recommended wrist size is 140 to 210 mm. That is a substantial watch, closer to a dive computer than to a slim lifestyle watch, and it has three controls: an upper-left button, a rotating crown at upper right and a lower-right button.

The display is a 1.5-inch LTPO 2.0 AMOLED panel at 466 x 466 pixels and 310 pixels per inch. Huawei states a peak brightness of 3,500 nits, measured with a 30 percent average picture level, which means bright highlights rather than a fully white screen. Colours are black, blue and green. The black version ships with a black fluoroelastomer strap and an extra-long one. The blue version adds a blue and white fluoroelastomer strap plus a titanium strap, and the green version has a green and white composite strap, a titanium strap and standard and extra-long green fluoroelastomer straps. Huawei notes that composite, titanium and ceramic straps are not intended for swimming or sweat, so another strap is advised for water use.

Diving and outdoor features

The headline is diving. The watch is rated 20 ATM and IP68 and IP69 and is certified to the EN 13319 diving-equipment standard for depths up to 150 metres, with ISO 22810 certification for water resistance. Huawei describes it as the first 150-metre diving smartwatch that also keeps its audio functions on land. A compact sonar module lets divers exchange text and emoji messages up to 30 metres apart, and an SOS can be triggered by holding the upper-left button for three seconds; a partner can forward it once, reaching up to 60 metres. Dive data such as depth, time, speed, no-decompression limit and partial pressure of oxygen is shown on screen, and the decompression guidance uses the Buhlmann ZHL-16C algorithm with reminders for more than 20 states such as an overly fast ascent. Huawei limits diving to temperatures between 0 and 38 degrees Celsius, and recommends rinsing the watch in fresh water after the sea.

Outside the water, the watch has a redesigned antenna system and dual-frequency GNSS covering GPS, GLONASS, Galileo, BeiDou and QZSS on both L1 and L5 bands where supported. Expedition mode supports route import, location marking and full-colour offline maps. Fall detection sends an SOS call if a fall is not cancelled within 60 seconds, and a high-altitude alert triggers above 2,500 metres. For golfers, Huawei lists a database of more than 17,000 courses with 3D maps, a Green View, plays-like distance, a driving-range mode with swing training and club selection. Golf course support depends on country and region.

Health, calling and software

The sensor list includes an optical heart-rate sensor, ECG, a depth sensor, temperature, barometer, accelerometer, gyroscope, magnetometer, ambient light and the new X-TAP module, a sensor on the side of the case that extends measurements from the wrist to a fingertip. A long press opens a Health Glance report that Huawei says covers more than ten metrics in about 60 seconds, and a single tap gives a blood-oxygen reading. The watch also offers ECG analysis, pulse wave arrhythmia analysis, sleep tracking with HRV and respiratory rate, and an emotional wellbeing feature that classifies 12 emotional states. Huawei states that none of this is a medical device and the results are for reference only.

Calling is a strong point. The watch supports eSIM calls with software-based noise cancellation, so it can place calls without a phone where carriers support the service, either via One Number or an independent number. Wi-Fi 6, Bluetooth 5.2, NFC for payments and Huawei's NearLink short-range standard complete the connectivity list. It works with Android 9.0 or later and iOS 13.0 or later. App availability on Huawei watches is narrower than on Wear OS or watchOS devices, and some features, such as golf course support and eSIM service, differ by region.

Battery and charging

Huawei's figures reflect that this is a feature-heavy watch. Paired with an Android phone in standard mode, it quotes 4.5 days of typical use and 3 days with the always-on display. Paired with an iPhone the numbers are 3.5 and 2.5 days. Battery saver mode extends this to 11 days of light use, 6 days of typical use and 4 days with the always-on display. Mode-specific figures are 40 hours for Expedition, 24 hours for Golf (about four rounds), 22 hours for Trail run and 18 hours for Diving, falling to 12 hours when sonar-based communication is switched on. All values are from Huawei's laboratories under stated conditions, including two hours of LTE connection per day in the standard test, so real-world results will vary. Wireless charging is supplied through the second-generation Wireless SuperCharger in the box, and Huawei says 15 minutes of fast charging can power a day.

Who it is for

The Ultimate 2 targets divers, free-divers, golfers and outdoor users who want a rugged watch with phone-independent calling and advanced safety tools, and who are happy to charge it every few days. Freedivers and recreational divers are the most specific audience, since sonar messaging and EN 13319 certification are rare in a smartwatch. For everyday fitness without those features, the lighter and longer-lasting GT-series watches are a better fit; the rankings page helps compare options.

Compromises and things to check

The compromises are weight, size and battery. At about 80 grams without a strap and nearly 13 mm thick, the watch will feel large on a small wrist. Battery life of a few days is far below Huawei's own GT line. Sonar messaging is a communication feature between divers, so its value depends on dive partners also having a way to receive messages, and Huawei's page does not describe compatibility with other brands' equipment. Liquid-metal cases can show minor dark spots or micro pinholes from the casting process, which Huawei says are normal. App support is limited, and some functions require updates or depend on region. Always check the diving limits, temperature ranges and official guidance before relying on any dive computer feature.